How Often Should the Timing Chain Be Replaced?

[Phillips]

The timing chain should be replaced every 80,000 to 100,000 kilometers. As mileage increases, wear and tear will occur. Additionally, since the guide rails are made of plastic, prolonged use can also lead to wear. In some vehicles, the timing chain guide rails may even break during operation. The timing chain is a crucial component of the engine, primarily responsible for driving the valve train to ensure the engine's intake and exhaust valves open and close at the correct times, allowing the cylinders to function properly. In certain models, such as the Volkswagen Jetta EFI, Bora, Sagitar, and Audi, the timing belt also drives the water pump.